Harmonic Sieve
A freestanding resonance-energy collector from Fractal Citadel’s later triangular working tradition. Its main volume is a steep triangular prism on one broad, low, solid rectangular black vitreous-stone plinth; the horizontal ridge runs from the front south gable to the rear north gable. Three continuous white crystalline A-frame ribs support the prism at front, middle and rear. At each foot, three nested triangular bearing collars with white bearing faces and dark ceramic protective rims seat the diagonal strut on the solid plinth; do not hollow the base.
The front gable holds one upright equilateral triangular black ceramic cassette inside the white rib, fixed at exactly three corners. A large inverted triangular aperture and two successive smaller generations create a clear Sierpinski pattern with sturdy connecting ribs. Behind it, two smaller triangular frames align concentrically in depth around a violet crystal collector cavity, showing an inward sequence of cyan light through the exterior openings. Keep all these frames below the same ridge height. Both long roof slopes are fully designed assemblies of triangular dark ceramic plates between the A-frame ribs, with two generations of triangular light perforations; recessed violet translucent mineral panels close the weather layer beneath these screens. The left west slope has more open light apertures; the right east slope has denser closed service cassettes. The north gable is mostly closed in violet mineral infill with three small triangular vents and one low rectangular ceramic service hatch. Narrow cyan slits mark the feet and intake; no exterior floodlights, gold decoration, pipes, turbines or smokestacks. Sharp crystalline edges and legible negative space.